摘要
我们建议一个光计划产生原子 qubits 的簇状态，与在分开的光洞套住的各个，经由 atom-cavity-laser 相互作用。每 qubit 的量信息在原子的退化地面状态上被编码，因此在他们之间的纠纷对自发的排放是相对稳定的。一个单个光子的消息提供者和二块古典地在现在的计划被雇用。由控制 atom-cavity-laser 相互作用的顺序和时间，我们证明原子簇状态能确定地被生产。
We propose an optical scheme to generate cluster states of atomic qubits, with each trapped in separate optical cavity, via atom-cavity-laser interaction. The quantum information of each qubit is encoded on the degenerate ground states of the atom, hence the entanglement between them is relatively stable against spontaneous emission. A single-photon source and two classical fields are employed in the present scheme. By controlling the sequence and time of atom-cavity-laser interaction, we show that the atomic cluster states can be produced deterministically.
基金
Supported by the National Basic Research Program under Grant No 2007CB925204, the National Natural Science Foundation of China under Grant Nos 10947135 and 10775048, the Opening Project of Key Laboratory of Low Dimensional Quantum Structures and Quantum Control （Hunan Normal University）, the Ministry of Education under Grant No QSQC0903, the Scientific Research Fund of Hunan Provincial Education Department under Grant No 09C062, the Construct Prograzn of the Key Discipline in Hunan Province and the Construct Program of the Key Discipline in Changsha University of Science and Technology.
关键词
原子簇
腔QED
量子位
制备
集群
相互作用
量子比特
基态原子
Computational physics Optics, quantum optics and lasers Quantum information and quantum mechanics
